Disc-Top Tunicate

Chelyosoma productum

Chelyosoma productum is a sessile organism typically found in the Eastern Pacific, thriving in rocky subtidal habitats. It is commonly located at depths ranging from the low tide mark to 50 meters. Divers may encounter this species at various dive sites, as it has been recorded near multiple locations. The tunicate can be identified by its distinct disc-shaped top, which sets it apart from other similar species in its environment. This species is hermaphroditic, allowing for both cross- and self-fertilization during reproduction. The life cycle begins with eggs that develop into lecithotrophic larvae, which eventually undergo metamorphosis to become benthic adults. This unique reproductive strategy contributes to its presence in various habitats, particularly in shallow rocky areas where it can filter feed on plankton and organic matter. During a dive, encountering the Disc-top Tunicate can be intriguing, as it often blends into its surroundings. Divers should observe its behavior and habitat closely, as it plays a role in the ecosystem by filtering water and providing habitat for other marine organisms. The conservation status of this species has not been evaluated, indicating a need for further research into its population dynamics and ecological role.